Tengo una transacción sin procesar y me gustaría verificar si está firmada o no. Cómo puedo hacer esto.
Intenté usar bitcoind y verificar una transacción desde la cadena de bloques, pero dice que no está completa.
$ bitcoin-cli --testnet getrawtransaction 587d670669e410748553badc3e885d7c58e67f1a0bb36e62ed165d340bf09924
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
$ bitcoin-cli --testnet signrawtransaction 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
{
"hex" : "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",
"complete" : false
}
Tú podrías:
$bitcoin-cli decoderawtransaction <HEX>
Luego verifique si todos vinstienen un archivo scriptSig.
Un tx sin firmar se vería así (parcial):
{
"txid" : "8b2c1d3cfb884406747ac8d37b5e66ae18cba9acacb6074cc74e3aab1bfae55d",
"version" : 1,
"locktime" : 0,
"vin" : [
{
"txid" : "cc8eb9dafb5c01a9ab69c03747de31630baaf8f7de63847cfe4fb91684bef564",
"vout" : 1,
"scriptSig" : {
"asm" : "",
"hex" : ""
},
"sequence" : 4294967295
}
],
un firmado (parcial)
{
"txid" : "587d670669e410748553badc3e885d7c58e67f1a0bb36e62ed165d340bf09924",
"version" : 1,
"locktime" : 0,
"vin" : [
{
"txid" : "3d56c5cf716d911e7b89447864bf8625cfae8ee9311d203dff6a2979f2470b1a",
"vout" : 0,
"scriptSig" : {
"asm" : "3045022100fd58b00ca836fd4b37b4e9dd2816fafd7817601f6248084c1f19e4d8004c484602203bd3e6d76bb45c2056b925e256b332df7f8a17b1b19b22bba1b6a2d9da59f6a301 03cd34f8c371bf1036718313bc2c33002b9b29c937688e7a4edd4cc92deb94f6b7",
"hex" : "483045022100fd58b00ca836fd4b37b4e9dd2816fafd7817601f6248084c1f19e4d8004c484602203bd3e6d76bb45c2056b925e256b332df7f8a17b1b19b22bba1b6a2d9da59f6a3012103cd34f8c371bf1036718313bc2c33002b9b29c937688e7a4edd4cc92deb94f6b7"
},
"sequence" : 4294967295
},
Puede llamar a http://tbtc.blockr.io/api/v1/tx/raw/587d670669e410748553badc3e885d7c58e67f1a0bb36e62ed165d340bf09924
Está utilizando blockr.io de API de terceros, preste atención al prefijo "tbtc" en la URL que indica testnet. Obtendrá datos json con el elemento scriptSig dentro de cada entrada y scriptPubKey en cada salida, para validar la firma, utilizará algún tipo de biblioteca de código abierto que prefiera.
Nick ODell